Fence-gate



J. G. GUNVALDSN.

FENCE GATE.

(Application med Aug. 2,1897.) v (No Model.) 2 Sheets-Sheet 2.

No. 612,456. Patented ont. la; ma.'

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lUNrrnn VSTATES `JOI-IN G. GUNVALDSON, OF OYRUS, MINNESOTA.

FENCE-GATE.

SPEC111."IGALION forming part 0f Letters :Patent NQ. 612,456, dated October 18, 1898.

pplicationiilecl August 2, 11897. Serial No. 646,815. (No model.) V

T0 a/ZZ whom it may concern:

Be it known that I, J oHN G. GUNvALDsoN,

a citizen of the United States, residing at Cyrus, in the county of Pope and State of Minnesota, have invented a new and useful vesting machinery from the place where he is sitting or standing and that can as wellbe` `opened and closed by a pedestrian; second,

to obtain a gate that will fold together and be perfectly out of the way when open; third, a gate that will work satisfactorily in winter and summer, which will not be affectedby deep snow, and will not cause snow to accumulatein the gateway; and fourth, a gate that will automatically and securely lock itself both when open and closed, thus making it perfectly safe. I attain these objects by the mechanism illustrated in the accompanying drawings, in which Figure 1 is a perspective View of my gate, showing portions broken away, thereby eX- posing its internal workings more clearly to View. Fig. 2 is a detail plan view of the operating mechanism. Fig. 3 is a side elevation of the lock which holds the gate in closed position. Fig. 4 is a side elevation of the lock adapted to hold the gate in raised position. Fig. 5 is an alternate construction of operating mechanism, showing single counterweighted cables for operating the gate. Fig. 6 is a detail perspective view of the gate shown in raised position. Fig. 7 is a detail end elevation of the gate in raised position. Fig. 8 is a detail rear elevation of the gate shown in raised position. Fig. 9 is an enlarged detail View of the lock for holding the gate in raised position, showing the gate-bar in dotted position and the lock in engagement with the end of the bolt mounted on the gate` bar. Fig. 10 is an enlarged detail view of the trigger-locli, showing it in full lines tilted for the purpose of allowing the bolt to engage with it and in dotted lines the position of the parts in the act of disengagement.

Similar letters and figures of reference refer to similar parts throughout the several views.

In the drawings, A represents the pillarpost for supporting the gate and is composed of two uprights 2 and 3, erected in the ground, upon which is mounted by means of bolt4 the :mainbar O of the gate B, which is made up of the beams 5 and 6, suitably braced by blocks 7. Upon the ends of the beams 5 and 6 are pivotally mounted upon the bolt 8 the crossarm 9 and counterweighted lock 10. To the ends of the cross-arm 9 are pivotally connected the rods 11 and 12 and 13 and 14, respectively, which in turn have their opposite ends journaled to the uprights 2 and 3 of the pillar-post A.

The gate B is adapted to swing into an upright position, as shown in Fig. 6, turning on its bearings in the pillar-post A, the cross-arm 9 swinging into adjusted position by means of the stay-rods 11 and 12 and 13 and 14.

When the gate is closed, cross-bar 9 rests vertically between the uprights 15 and 16 of the gate-post I), and the gate-rods 1l and 12 and 13 and 14, which are pivotally fastened thereto and to the uprights 2 and 3 of the post A, rest substantially parallel to the main bar C.

The gate is provided with lock 10, which has counterweight 20, which causes the lock toengage with bolt 17. The look isv provided with lip portion 18, having shoulder 19, which in the descending of the gate engages with bolt 17, and thereby locks the gate. Fastened to lip portion 18 through hole 22 is the cable 21, with its opposite end connected to upright lever-arm 23 of the bell-crank 24, which is 5 and 6 of the gate-arm O. The cable 26 is yfastened to the end of arm 24 and branches ward and forward the gate is raised and lowered.

In the alternate construction shown in Fig. 5 I use single cables 48 and 49, which lead IOO from the posts 33 and 34 to the cable 26. These I provide with weights 59 and 60 upon their ends, which take up the slack when in operation.

To simultaneously operate both of the semicircular plates 31 and 32 and their respective handles 35 and 36, I preferably fasten cables 28 and 30 to the reverse edge of lthe semicircular plates to that which cables 27 and 29 are fastened and fasten their ends respectively to the cables 27 and 29 beyond block device E. The sheaves 46 and 47 are journaled in frame portion of the block device E, which in turn is journaled to cross-arm 44, mounted upon supporting-arms 43, which are fastened to the uprights 2 and 3 of the post A. When either of the handles 35 or 36 is operated, their respective cables cause the arm 24 of the bell-crank to be tilted, thus disengaging the shoulder 19 of lock 10 from engagement with the bolt 17.

To lighten the gate for convenience in opening, I preferably provide a counterweight 37, which is mounted upon lever-rod 38, journaled ou arm 39 of the bell-crank 24. This lever-rod 38 has fulcrum support upon the lower ends of the swinging rods 40, which are pivotally mounted on the uprights 2 and 3 of the post A. To hold the lever-arm in operating position in case it meets with an obstruction on the ground when in use, I preferably provide a stop 42, which is mounted on arm C, and also the arms 40 with knucklejoints 41.

To support the gate and hold it open, Iprovide trigger-lock 51, which is mounted upon the end of the fulcruin-arm 40, and is provided with counterweight 52 and also with the V-shaped engaging socket 53 and guide-linger 54, against which the end 56 of bolt 25 strikes and causes the trigger-lock to be thrown into engagement therewith.

In the operation of my improved gate one of the handles is turned, causing the leverarm 24 to be tilted toward the post A, thus drawing upon the cable 21 and tilting the lock 10 from engagement with bolt 17 in gatepost D. The gate then rises until end 56 of bolt 25 contacts with the guide-linger 54, which causes the lock to be depressed and the V-shaped socket to engage with said end 56 upon releasing the handle. To lower the gate, the handle is released after slightly tilting the gate back, causing the bolt to glide up and pass around the lower corner of the V-shaped groove of the trigger-lock in disengaging itself therefrom. The trigger-lock then assumes its normal position and rests upon support 57, which is mounted on upright 3. The gate is then lowered, falling by its own weight into the position shown in Fig. 1, the lock 10 engaging with bolt 17 and holding the gate locked when the handle is released.

IIaving described my sire to secure by Letters Patent is v In a device of the class described, the com bination of the main gate-bar C, jou rnaled on upright support A, having supporting-rods B, parallel on either side thereof and journaled at their either ends, respectively to the upright support A, and a cross-arm, which is journaled to the end of said main gate-bar C, adapting said gate to rise and fall; the locking device for holding the gate in closed position and the means for automatically re leasing said lock when opening the gate, consisting of cables attached to said lock, having operating-levers att-ached thereto, which in their movement are adapted to iirst release the lock and then raise the gate; and the retaining device for holding said gate in raised position, consisting of a trigger-lock, which is mounted on the upright post A, adapted to engage with said gate and retain it in raised position, substantially as described.

JOHN G. GUNVALDSON. Witnesses.

J. J. OPTHUN, M. G. R. S. KAAR.

invention, what I de' 

